Answer:
0.942 ft/s
Step-by-step explanation:
The rate of descent is the rate at which the hot air balloon is descending, that is, how fast it is descending.
We calculate this by finding how far it has moved and then dividing it by the time it took it to descend.
It moved from 5275 ft to 3128 ft. The displacement is:
5275 - 3128 = 2147 ft
The time taken is 38 minutes. In seconds, it is:
38 * 60 = 2280 seconds.
Therefore, the rate of descent is:
2147 / 2280 = 0.942 ft/s
